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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Classification & Labelling & PBT assessment

PBT assessment

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Administrative data

PBT assessment: overall result

Reference
Name:
1,1,1,3,5,5,5-heptamethyl-3-octyltrisiloxane
Type of composition:
boundary composition of the substance
State / form:
liquid
Reference substance:
1,1,1,3,5,5,5-heptamethyl-3-octyltrisiloxane
PBT status:
the substance is not PBT / vPvB
Justification:

The substance does not meet the definitive criteria for persistence in the aquatic compartment; it is not P or vP. The screening criteria for persistence (P/vP) in the sediment compartment are met.

The substance does not meet the definitive criteria for bioaccumulation based on weight of evidence determination using expert judgement; it is not B or vB.

The substance does not meet the definitive criteria for toxicity; it is not T.

Likely routes of exposure:

Emission characterisation is not required as the substance is not PBT/vPvB.